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Daily tech news

Scientists freeze quantum motion using ultrafast laser trick
Harvard and PSI scientists have managed to freeze normally fleeting quantum states in time, creating a pathway to control them using pure electronic tricks and laser precision.
Researchers develop recyclable, healable electronics
Electronics often get thrown away after use because recycling them requires extensive work for little payoff. Researchers have now found a way to change the game.
Ultra-thin lenses that make infrared light visible
Physicists have developed a lens with 'magic' properties. Ultra-thin, it can transform infrared light into visible light by halving the wavelength of incident light.
Engineers develop self-healing muscle for robots
Students recently unveiled their invention of a robotic actuator -- the 'muscle' that converts energy into a robot's physical movement -- that has the ability to detect punctures or pressure, heal the injury and repair its damage-detecting 'skin.'
Listening to electrons talk
Researchers present new experimental and theoretical results for the bound electron g-factor in lithium-like tin which has a much higher nuclear charge than any previous measurement. The experimental accuracy reached a level of 0.5 parts per billion. Using an enhanced interelectronic QED method, the theoretical prediction for the g-factor reached a precision of 6 parts […]
Waste to foundation: Transforming construction waste into high-performance material
In a major advancement for sustainable construction, scientists have created a cement-free soil solidifier from industrial waste. By combining Siding Cut Powder and activated by Earth Silica, an alkaline stimulant from recycled glass, scientists produced a high-performance material that meets compressive strength standards exceeding the 160 kN/m construction-grade threshold and eliminates arsenic leaching through calcium […]

3-phase IGBT-inverter – Working principles

In this article the 3-phase IGBT inverter and its functional operation are discussed. In order to realize the 3-phase output from a circuit employing dc as the input voltage, a 3-phase (IGBT) inverter has to be used. The inverter is build of switching devices, thus the way in which the ...

Core tutorial, Embedded systems

Using PWM in PIC16F877A

Digital signals (0 or 1) and analog signals (range of values) are both used in electronics. Analog inputs can be converted to digital through an ADC. To control analog devices with a microcontroller, DACs are used but they're costly and space-consuming. PWM (Pulse Width Modulation) is a cost-effective technique that ...